Misplaced Pages

#328671

33-428: The Indian locomotive class WAG-12B is a class of 25 kV AC electric locomotives that was developed in 2017 by Alstom with technological collaboration with Indian Railways . The model name stands for wide gauge (W), alternating current (A), goods traffic (G) locomotive-12. They entered trial service in 2019. A total of 450 WAG-12B have been built at Electric Locomotive Factory, Madhepura , Bihar , India . With

66-427: A battery is determined by the chemistry of that cell (see Galvanic cell § Cell voltage ). Cells can be combined in series for multiples of that voltage, or additional circuitry added to adjust the voltage to a different level. Mechanical generators can usually be constructed to any voltage in a range of feasibility. Nominal voltages of familiar sources: In 1800, as the result of a professional disagreement over

99-406: A body the size of a standard locomotive. The traction motors necessary to produce such torque would not even fit onto the axles. More axles will be needed for optimum load distribution and pulling power. All this will make the locomotive incredibly long. Now, no railway vehicle on Indian Railways may be longer than 25 metres, else they won’t be able to negotiate turnouts. Since all the equipment caused

132-459: A joint venture for the project. The largest Foreign Direct Investment (FDI) project of Indian Railways, the first locomotive was initially expected to enter service on 28 February 2018. Alstom announced that the new locomotive would be based on its highly successful Prima II model. Alstom calls it the Prima T8. This was the first time in 20 years that Indian Railways procured new locomotives. However,

165-485: A joint venture where Indian Railways would hold a 26% stake and the bidder 74%. This would have been the first foreign direct investment in the fully state-owned railway sector of the country. This invitation received bids from General Electric , Alstom, Bombardier Transportation , Siemens Mobility , China CNR and CSR Corporation . The number of locomotives to be built was subsequently increased from 660 to 800. The Research Design and Standards Organisation published

198-565: A power output of 12,000 hp, the WAG 12 is twice as powerful as its immediate predecessor, WAG-9 , making it one of the most powerful freight locomotives in the world. The locomotive is being developed for deployment on the Dedicated Freight Corridors , where it will be used to haul freight trains weighing more than 6,000 tonnes (5,900 long tons; 6,600 short tons) at speeds of 100 km/h (62 mph) to 120 km/h (75 mph), doubling

231-441: A ratio because the cgs unit of voltage is inconveniently small and one volt in this definition is approximately the emf of a Daniell cell , the standard source of voltage in the telegraph systems of the day. At that time, the volt was defined as the potential difference [i.e., what is nowadays called the "voltage (difference)"] across a conductor when a current of one ampere dissipates one watt of power. The "international volt"

264-533: A series-connected array of several thousand or tens of thousands of junctions , excited by microwave signals between 10 and 80 GHz (depending on the array design). Empirically, several experiments have shown that the method is independent of device design, material, measurement setup, etc., and no correction terms are required in a practical implementation. In the water-flow analogy , sometimes used to explain electric circuits by comparing them with water-filled pipes, voltage (difference in electric potential)

297-576: A specification in June 2013, detailing the capability requirements for an eight-axle locomotive intended to be used on Dedicated Freight Corridors (DFC). It was not until November 2015, however, that Alstom was finally awarded the contract to build the locomotives. Development of the locomotive began after the Ministry of Railways and Alstom signed a contract worth ₹ 25,000 crore (equivalent to ₹ 380 billion or US$ 4.5 billion in 2023). and created

330-453: A “black box”, etc. It is the original version which was imported. Limitations of the original WAG-12 design resulted in modifications and the WAG-12B variant. Only one unit (60001) was made. This unit has been modified to WAG-12B specification. It is the current version in production. Differences with WAG-12A variant include: On the morning of June 2, 2024, MSN 60059, a Saharanpur based WAG-12

363-485: Is a city and a municipal council . It is the headquarters of Palwal district , the 21st district of Haryana state in northern India . It is a centre of the cotton trade in the area. It is part of Braj region . It is also a part of National Capital Region . The origin of Palwal is related to the local legend related to the Mahabharata , according to which the town is named after an asura called "Palwasura" who

SECTION 10

#1732892055329

396-414: Is also equivalent to electronvolts per elementary charge : The volt is named after Alessandro Volta . As with every SI unit named for a person, its symbol starts with an upper case letter (V), but when written in full, it follows the rules for capitalisation of a common noun ; i.e., volt becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case. Historically

429-606: Is likened to difference in water pressure , while current is proportional to the amount of water flowing. A resistor would be a reduced diameter somewhere in the piping or something akin to a radiator offering resistance to flow. The relationship between voltage and current is defined (in ohmic devices like resistors ) by Ohm's law . Ohm's Law is analogous to the Hagen–Poiseuille equation , as both are linear models relating flux and potential in their respective systems. The voltage produced by each electrochemical cell in

462-566: Is the elementary charge and h is the Planck constant ), a "conventional" value K J-90 = 0.4835979 GHz/μV was used for the purpose of defining the volt. As a consequence of the 2019 revision of the SI , as of 2019 the Josephson constant has an exact value of K J = 483 597 .848 416 98 ... GHz/V , which replaced the conventional value K J-90 . This standard is typically realized using

495-546: Is the first Indian Railways locomotive that has a power output greater than 10,000 horsepower . With a power output of 12,000 hp, it is twice as powerful as its immediate predecessor, WAG 9 , and is one of the most powerful freight locomotives in the world. For super-high powered locomotives like the WAG-12, design specifications make it necessary that they have twin sections. For a locomotive to output 9 mega watts (12000 hp), it would be impossible to house all that equipment into

528-435: Is the potential difference between two points that will impart one joule of energy per coulomb of charge that passes through it. It can be expressed in terms of SI base units ( m , kg , s , and A ) as It can also be expressed as amperes times ohms (current times resistance, Ohm's law ), webers per second (magnetic flux per time), watts per ampere (power per current), or joules per coulomb (energy per charge), which

561-458: Is to be followed by the assembly of 35 new locomotives in 2020, 60 in 2021, and 100 locomotives each year from 2022 until all 800 locomotives are delivered. They are three phase, twin-section electric freight locomotive consisting of two identical sections, each of which rests on two twin-axled Bo-Bo bogies. The locomotive is being jointly developed by Alstom and the Indian Railways , and

594-583: The Rowlatt Act . Keeping this memory alive lasting on October 2, 1938, Netaji Subhas Chandra Bose had kept it. Gandhi exhibition was established in Gandhi Seva Ashram in the year 1962. In it, history related to Gandhiji was preserved. Pictures for the exhibition were brought from the National Gandhi Museum of Delhi . Later, they started getting damaged, they were upgraded and the exhibition site

627-491: The " conventional " volt, V 90 , defined in 1987 by the 18th General Conference on Weights and Measures and in use from 1990 to 2019, was implemented using the Josephson effect for exact frequency-to-voltage conversion, combined with the caesium frequency standard . Though the Josephson effect is still used to realize a volt, the constant used has changed slightly. For the Josephson constant , K J = 2 e / h (where e

660-678: The British Association for the Advancement of Science had defined the volt, ohm, and farad. In 1881, the International Electrical Congress, now the International Electrotechnical Commission (IEC), approved the volt as the unit for electromotive force. They made the volt equal to 10 cgs units of voltage, the cgs system at the time being the customary system of units in science. They chose such

693-540: The WAG-12 to be around 38 metres long, the solution as to add a vestibule at the middle, making it a twin section locomotive. The eight-axle design of the locomotive reportedly improves performance and minimises energy consumption and maintenance costs. The locomotive incorporates special features based on the Alstom Prima T8 for operations in humid or dusty environments and extreme temperatures ranging from −50 °C (−58 °F) to 50 °C (122 °F). The cabin of

SECTION 20

#1732892055329

726-654: The average speed of freight trains in the sector. The origins of WAG-12B can be traced back to 2006. When the Government of India approved the Dedicated Freight Corridor (DFC) project and set up the DFCCIL to build it. In order to run trains at maximum efficiency, even the most powerful locomotive of that era, the WAG-9 was found inadequate. Hence, it was decided to procure new, powerful locomotives for dedicated operations on

759-659: The brakes of the locomotives to German brake manufacturing firm Knorr-Bremse . These brakes were to be produced at Palwal in the Indian state of Haryana . The couplers of the locomotive were designed and developed by French Railway company Faiveley Transport . Around 85-90% of the components will be procured from within India. The first body shell of the locomotive was delivered to the Haldia Port in West Bengal on 20 September 2017. It

792-415: The galvanic response advocated by Luigi Galvani , Alessandro Volta developed the so-called voltaic pile , a forerunner of the battery , which produced a steady electric current . Volta had determined that the most effective pair of dissimilar metals to produce electricity was zinc and silver . In 1861, Latimer Clark and Sir Charles Bright coined the name "volt" for the unit of resistance. By 1873,

825-547: The locomotive is comparatively larger and offers better comfort for drivers, especially during long-distance operations. The locomotives can also be equipped with climate control systems such as air conditioners, food preparation and storage facilities, and even a toilet—a standard that Indian Railways introduced in 2016. It will also have state of the art systems, including GPS and GPRS-based remote diagnostics, tracking and systems monitoring, wireless control of multiple-unit locomotives, cruise control, autopilot, incident recorder or

858-545: The locomotive was launched by Prime Minister Narendra Modi in Madhepura , Bihar on 10 April 2018. As development of the engines progressed, Alstom outsourced the task of producing traction transformers for the locomotives to Swedish-Swiss multinational corporation ABB in 2016. These all-weather transformers were to be produced in Vadodara , Gujarat . In 2017, Alstom outsourced the task of developing, testing, and maintaining

891-401: The two DFCs in an manner unlike it was done until now, where locos were built at CLW by Indian Railways under technology transfer agreements. In June 2008, the Ministry of Railways invited bids from global firms to design and develop the locomotives. The initial deal was to set up a new electric locomotive factory at Madhepura , Bihar to build and maintain 660 high-horsepower locomotives in

924-425: Was built during Sher Shah Suri 's reign. Excavations have unearthed evidence of a grand palace at the bottom of the fort. As of 2021, it lies in ruins. A historical building by the name 'Gandhi Seva Ashram' and a Museum was made in the memory of Mahatma Gandhi. The Gandhi Museum is close to Palwal Railway Station. Mahatma Gandhi was arrested on 10 April 1919 at Palwal railway station while going to Punjab against

957-475: Was changed to the museum. On 15 August 1979, Gurgaon district was further divided to form a new Faridabad district , and Palwal became a part of it. On 15 August 2008, Palwal became the administrative headquarters of the newly formed Palwal district , the 21st district of Haryana. Palwal is located at 28°07′N 77°20′E  /  28.12°N 77.33°E  / 28.12; 77.33 . It has an average elevation of 195 metres (640 ft). Palwal

990-410: Was defined in 1893 as 1 ⁄ 1.434 of the emf of a Clark cell . This definition was abandoned in 1908 in favor of a definition based on the international ohm and international ampere until the entire set of "reproducible units" was abandoned in 1948. A 2019 revision of the SI , including defining the value of the elementary charge , took effect on 20 May 2019. Palwal Palwal

1023-532: Was involved in an accident. A goods train overshot a signal on the DFC corridor near Sirhand, Punjab, and hit another stationary goods train. 2 loco pilots were injured in the incident. Volt One volt is defined as the electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points. It can be expressed in terms of SI base units ( m , kg , s , and A ) as Equivalently, it

Indian locomotive class WAG-12 - Misplaced Pages Continue

1056-534: Was slain by Balarama , the brother of Krishna . To commemorate this event an annual festival called "Baldev Chhat Ka Mela" is held here, and a "Dauji temple" in honor of Balrama is situated in Banchari village 25 km from Palwal on Grand Trunk Road . The local tradition identifies Palwal with the Apelava town mentioned in the Mahabharata , which was later restored by Vikramaditya . Matia Fort or Palwal Fort

1089-544: Was then transferred to the Electric Locomotive Factory (Alstom Madhepura) for final assembly, which began on 11 October 2017. The first locomotive, numbered 60001, was tested in the Madhepura factory on 27 February 2018, one day before its initial launch date. Deliveries of the locomotives are planned from 2018 through 2028, with the first locomotive slated to enter service in 2018, and a total of five by 2019. This

#328671